Evaluate the exponential expression.04
A. 0
B. 1
C. 4
D. undefined
Answer: A
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Decide whether or not the given equation is an identity.
- 
= 1
A. Yes B. No
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.3 ln a - 7 ln b
A. 
B. ln
10
C. ln
D. ln
Solve the system.A small airplane traveled 190 mph with a tailwind and 130 mph with a headwind. Find the speed of the wind and the speed of the airplane in still air.
A. speed of the wind was 25 mph, speed of the plane in still air was 155 mph B. speed of the wind was 40 mph, speed of the plane in still air was 150 mph C. speed of the wind was 30 mph, speed of the plane in still air was 160 mph D. speed of the wind was 25 mph, speed of the plane in still air was 165 mph
Multiply or divide as indicated.
÷ 
A. 5x(x - 7) B. 5x(x + 7) C. -5x(x - 7) D. -5x(x + 7)